Polycarboxylate based anti-mud agent and preparation method thereof

Abstract

The invention discloses a novel environment-friendly polycarboxylate based anti-mud agent and a preparation method thereof, which belong to the field of architecture material concrete admixtures. The polycarboxylate based anti-mud agent is prepared from free radical initiated polymerization of polyoxyethylene ether containing unsaturated double bonds, unsaturated esters and derivatives which are taken as monomers as well as unsaturated carboxylic acid and derivatives thereof and a redox initiator. The polycarboxylate based anti-mud agent blocks soil in a concrete floor material to adsorb a polycarboxylate superplasticizer during use, thereby reducing the use amount of a water reducer, saving cost and improving the working performance of concrete. The anti-mud agent synthesized according to the invention can effectively improve the influence of large content of mud in sandstone materials when the polycarboxylate superplasticizer is used.

Description

technical field

[0001] The invention relates to a polycarboxylate anti-mud agent and a preparation method thereof, belonging to the field of concrete admixtures for building materials. Background technique

[0002] With the continuous development of social economy, the demand for construction concrete is increasing, and at the same time, there are high requirements for admixtures that must be added to concrete. Especially in recent years, the proposal of high-strength self-compacting environmental protection concrete has promoted The development of concrete admixtures in the direction of environmental protection, high water reduction, high slump retention, and good adaptability to concrete floor materials. However, in concrete construction, the soil contained in the ground material will seriously affect the effect of the polycarboxylate water reducer, making the fluidity of the concrete poor and the slump loss large, affecting the progress and quality of the project. The pr...

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